Herbicidal 3-aminopyrazolin-5-ones

Abstract

Herbicidal 3-aminopyrazolin-5-ones of the formula ##STR1## in which R 1 stands for alkyl, alkenyl, halogenoalkyl, halogenoalkenyl, alkoxyalkyl, alkylthioalkyl, cycloalkyl, for optionally substituted aralkyl or for optionally substituted aryl, R 2 stands for hydrogen or alkyl, R 3 stands for hydrogen or alkyl, R 4 stands for hydrogen, alkyl, alkenyl, alkinyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonylalkyl or alkanoyl, or R 3 and R 4 together stand for an alkylene or alkenylene radical, each of which is divalent, X stands for halogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy or halogenoalkylthio, and Z stands for hydrogen, halogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy or halogenoalkylthio, and acid addition salts thereof. Intermediates of the formula ##STR2## are also disclosed.

What is claimed is: 
     
       1. An iminomalonic ester derivative of the formula ##STR147## in which X stands for halogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy or halogenoalkylthio, and Z stands for hydrogen, halogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy or halogenoalkylthio.